Mocheso switjha: sekemeng, molao-motheo oa ho sebetsa, motho o thontsoe

Ho sireletsa thepa ea motlakase ho tloha feteletseng mojaro mogote lesokoana fana. Kantle ho eona, ho lithapo ho overheat, ho fellang ka ho hloleha pele ho nako e kwahelang ea.

Molao-motheo oa ho sebetsa

mogote lesokoana mosebetsi ke ho hakolla thapo potolohong e ha jwale phallang ka eona e feta le ka lebitso. sethusathuto li entsoe ka termopodogrevatelya leo ka lona motlakase hona joale e ntse e feta, 'me poleiti ea bimetal, e leng e holofala holim' futhumatsang 'me a bula ya mabitso ketane. A phahameng jwale, ho ka potlako ho ho sebetsa.

Mora e sabaletseng oa potoloho thermocouple pholisa le kgutlang boemong ba bona ba pele.

Types of maano a ea fuser ho

Thermal lesokoana sebetsang ka merero e 'meli:

• mabitso a mang switjha ba koaloa morao lebotho la;
• sekemeng e reset nosi.

The mothofatso pele amana mogote sireletsang lesokoana (motlakase contactors, qartulad oa potoloho et al a.). ea bobeli e le sebelisitsoe ka mocheso e laoloa beha dintho tsamaiso ea (a sehatsetsi, oa tšepe, e chesang mokatong et al a.).

Lekapa bimetallic ka deflection e sebetsang sebakeng sa hae ka lihlopha le ho ikopanya le, e leng e qala potoloho motlakase. Ka lebaka la e tlase ka karabelo lebelo la sesebediswa ha tima ea segopo le phello powrotu. Ka disebediswsa kajeno lesokoana di a sebelisa, e ntseng e eketseha e sabaletseng oa potoloho lebelo.

Types of phetela mogote

phetela Thermal ba khethoa ka ipolela dilenaneo mojaro feteng eona ke 20-30%. Le jwalo le overload tripping le hlaha ka mor'a mets 20. Lekapa bimetallic sags butle. Tabeng ena, e sebetsang sebakeng sa hae ka Pinów ka hatela pele ka matla sesebediswa (ho ikopanya bouncing). Latelang mefuta lesokoana mogote.

1. RTP - sireletsa Motors mohato tse tharo le thermoelements ka maqhubu a ho fihlela ho 600 A le DC gagamalo dinetweke tseo ho fihlela ho 150 A. The poleiti bimetal e halefile ke beha sefuthumatsi le jwale phallang meetly. susumetsang hona joale e ka letsoho fetola ke deformation ea pele ea poleiti ea. Reset ka phehella le konopo, empa ho na le phetolelo e le ho intša resetting.
2. RTL - bakeng sa ho sireletsa mohato tharo Motors induction ke overload ka nako e telele, mohato unbalance ha male rotor jamming, kapa ka qalisang matla. Maemong a joalo, ho sebetsa motlakase ts'ehetsana cams, lipompo, Fans, 'me mechine ea tse ling. Lesokoana kenngoa ka starter,' me etsa hore le disebediswa tse ka bomong.
3. PTT - akarelletsa lebokosana la ho sireletsa mohato tharo Motors induction ke overload ka nako e telele, mohato unbalance, joalo-joalo 'na eaba ba aa ageletsweng ka .. actuators Magnetic ka lenaihana le DC lipotoloho.

Control le phetolo

The phetela electrothermal e lokela ho ba nako le nako beha boleng vene. Pele ho hlahloba le ho etsa bonnete ba, 屋内 bona e reriloeng pele mocheso. Ha Hlahloba boemo ba mabitso a mang, bimetal lipoleiti, likarolo fastening le mekgwa.

Tlhomamiso bakeng sa mocheso themosetate fetolehang etsa ikutloeleng eketseha kapa aa fokotseha, moo e mong le e-ba le karohano ea tekanyo e le tšoana le phetolo ea ho 10 ° C. Ha ba phetela ba na le mocheso matšeliso, ha ho na phetoho e hlokahalang.

Phetoho e entsoeng ho sebetsa ka le keketseho tšeletseng lesaka ka ke _nom. Le disebediswa tsa ho tlaase inertia ba butswe ka karohano ya 0.5-4 s, le nang le kgolo - ho tloha metsotsoana 4 ho 25. Ka mor'a moo, ka ho etsa hore ba eketseha hona joale ho tloha 1.2 ho ke _nom. Relays kahoo ba lokela ho hakolla thapo mabitso a mang mets 20.

thermostats e bonolo

Mocheso switjha ka bōpa e thehiloeng lipotoloho tsa elektronike tse sebelisoa ho lula re ena le esale pele mocheso Mokhoa oa k'homphieutha, mafelo a, sethuthutshi le sa t. D. Ho themosetate ena e ka sebediswa, balebeli ba potoloho ba ileng kenyelletsa ditokiseletso kutlo e entsoeng ka lekanya le ho ya referense poluplecha thermistor R ₂ le resistors R _1, R _3, R _4.

Ha liphetoho mocheso fapana le ho itoanela boleng R _2. The phoso pontšo feptjoang tswa borokho ho input tsa LM393 edy. Ho o sebetsang ho mokgwa wa comparator moo lesoba 3 tsa pontšo analoge ke phetoho botsoalle tloha lona theoha puso hore a sebetsang a lona. Signal tswa oa potoloho le khumo e Amplified ke transistor Q _1, ebe fene ka qalisa se hlahile. Ho pholisa thermistor, joale comparator e fapoha ka ho theoha Fan ena. Ka tsela ena, taolo ya mogote le hlaha ka tsela moea tsidifatso.

Sensor ho laola mocheso oa mokatong futhumatsang

Ka molao-motheo o tšoanang ho laola tsamaiso ea mokatong futhumatsang.

The lenaihana gagamalo 230 sebelisoa ho sesebediswa input ebe sokoloha ka phepelo transformerless matla ho kamehla 15 W. The ka monyako o hlalosoa divider R _4, R _5, R _9. Ha mokatong batang, R ₉ thermistor hanyetsa e 10 ohms. Ka TL431 zener fumana pontšo holimo 2,5 volts ketane VD _3, R _6, HL _2, U _1. Le pontšo ea sena se etsoa diode HL _2. Triac VS ₁ sheba ka le gagamalo fuoa ho futhumatsang mokatong. Ha mocheso lona fihla boleng esale pele, ho thermistor hanyetsa R ₉ (kutlo) e fokotseha hoo Zener diode ka taolo boleng input pontšo fetoha ka tlase ho tse 2,5 V. TL431 notletsoe, 'me hore ba optosimistor triac. Ka lebaka leo, ho beha sefuthumatsi unit trust e kgaoditswe. Hang ha fatše qala ho pholile, tshebetso e pheta.

Bonyane le mocheso lebetsoeng le e behiloeng ke resistors R ₄ le R _5. Ho switjha monyako e fetola ka mor'a tlhomamiso ya kutlo R _9. Lona teng ka bohareng pakeng tsa makhetlo hitara. Le matla a khumo, sebetsa ka lesokoana mogote, ke itšetlehile ka boleng ba ho hanyetsa R _7.

Tlang boemelong ba kutlo koaloa tube, shrinkable, le ho o tiisa ka kabel le thae kapa sekgomaretsi lera. Nahanisisa ke bohlale ho beha ka koporo sleeve le tlatsa le epoxy lehoakhoa. Top lera mokatong lithaele.

Tsela ea ho amahanya themosetate ho beha sefuthumatsi sa, ka bonoa temperaturdiagramm, e leng o emeloa 'mele oa dikai tse ngata. E le ka boela fumana ho tlhaloso ya sesebediswa.

Industrial themosetate bakeng hitara e ka khetha ho tswa ho mefuta e latelang:

• electromechanical - le pukwanana switjha ho seta botjha;
• ditsitithale - taolo o etsoa dikonopo kutlo kapa tactile, 'me tlhahisoleseding e hlokahalang (mocheso jwale le Litlhophiso) e bontša ka bapatsa;
• programmable - le hitara bophirima-lenaneo bakeng sa nako esale pele, 'me ka remoutu laoloa ke k'homphieutha.

bofello

Ho na le litsela tse ngata kamoo ho hokahanya le lesokoana mogote ho disebedisweng tse ding. Nakong e fetileng, ba ne ba lokela ho bokella matsoho a bona. Hona joale ka 'marakeng, u ka khetha ho themosetate, eo sekemeng ke gola ka botlalo joaloka ho beha sefuthumatsi (litanka motlakase, mofuthu mokatong le ba bang.). Ho bohlokoa ho fana ka hlokahala tshebetso, ho tšepahala le polokeho sebetsa.